Rouzaut, S., Orgeira, M.J., Tófalo, O.R., Vásquez, C., Argüello, G.L., Sanabria, J., Mansilla, L.
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Geoacta vol.38 no.2 Ciudad Autónoma de Buenos Aires dic. 2013
En la presente contribución se presentan resultados obtenidos de dos perfiles ubicados en localidades cercanas en la región central de la provincia de Córdoba. El objetivo del estudio fue determinar los parámetros magnéticos de los sedimentos constitutivos de los perfiles a fin de establecer una correlación entre ambos, así como efectuar una valoración de los cambios paleoambientales registrados. Ambos perfiles fueron descriptos y muestreados en detalle; en los especímenes colectados se realizaron mediciones de susceptibilidad magnética a 470 Hz y 4700 Hz, coercitividad, coercitividad de remanencia, magnetización de saturación y magnetización remanente de saturación, S-ratio, magnetización remanente anhistérica y susceptibilidad a altas temperaturas. Los resultados obtenidos permiten inferir que a pesar de encontrarse en una misma región, existen diferencias en la señal magnética, lo cual puede deberse a mayor presencia de carbonatos en uno de los perfiles, mayor retrabajo del material, diferencias en la permeabilidad, o una combinación de todas esas causas.
Comparative study of magnetic properties in central region of Córdoba province, Argentina
This contribution presents results obtained from two profiles located in nearby towns in the central region of Córdoba province. The objective of the study was to determine the magnetic parameters of the sediments that constitute the profiles in order to establish a correlation between both of them, and to evaluate any record of paleoenvironmental changes.
The profiles were described and sampled in detail; in the collected specimens magnetic susceptibility at 470 Hz and 4700 Hz was measured, as well as coercivity, coercivity of remanence, saturation magnetization and remanent saturation magnetization, S-ratio, anhysteric remanent magnetization and susceptibility at high temperatures. From the obtained results it is possible to infer that despite the proximity of the profiles, there are differences in their magnetic signal, which may be due to a higher content of carbonates in one of the profiles, more remobilization of the material, permeability differences, or a combination of all these causes.
This contribution presents results obtained from two profiles located in nearby towns in the central region of Córdoba province. The objective of the study was to determine the magnetic parameters of the sediments that constitute the profiles in order to establish a correlation between both of them, and to evaluate any record of paleoenvironmental changes.
The profiles were described and sampled in detail; in the collected specimens magnetic susceptibility at 470 Hz and 4700 Hz was measured, as well as coercivity, coercivity of remanence, saturation magnetization and remanent saturation magnetization, S-ratio, anhysteric remanent magnetization and susceptibility at high temperatures. From the obtained results it is possible to infer that despite the proximity of the profiles, there are differences in their magnetic signal, which may be due to a higher content of carbonates in one of the profiles, more remobilization of the material, permeability differences, or a combination of all these causes.
http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-77442013000200003
